Real Housewives in Bar Brawl

02/28/2011.

(TMZ) Multiple cast members on "The Real Housewives of New Jersey" were involved in a bar fight at a Hard Rock Hotel in the Dominican Republic this week ... TMZ has learned.

Sources involved in the situation tell us ... a couple of castmembers were hanging out at a bar inside the Hard Rock around 1:00 AM Wednesday morning when they got into a heated argument with a male patron.

We're told someone involved in the argument grabbed a drinking glass and smashed it over the man's head ... and the guy was hurt so badly, he needed immediate medical attention. more on this story